US PATENT SUBCLASS 335 / 160
.~.~ Interlocking

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
159  DF  .~ Plural independently operable switches {3}
160.~.~ Interlocking {1}
161  DF  .~.~.~> With cooperative-actuating means

DEFINITION

Classification: 335/160

(under subclass 159) Subject matter wherein the structure includes means whereby the plural devices are caused to operate alternately, successively or selectively, depending upon conditions either in the circuits which are to be

controlled, at the will of an operator, or according to a predetermined cycle or schedule. This subclass also contains those patents relating to means whereby one device is prevented from operating while another is in operating position as by an interlocking device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for multiple contact switches with plural armatures with interlocking or mechanical connection.

233, for polarized electromagnet with plural armatures having armature locking means.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism, 483, for interlocking linkage systems.

200, Electricity: Circuit Makers and Breakers,

1, for multiple circuit control devices, particularly indented subclass 5 for plural switches which may be interlocked, indented subclass 18 for plural switch operating means mechanically connected, and subclass 50 for plural interlocked switches.

235, Registers,

431, for data comparing calculators including plural coordinated switches.

246, Railway Switches and Signals,

131+, for interlocking signalling systems with electric switch actuating means.

361, Electricity: Electrical Systems and Devices,

191+, for electric circuits for relays and electromagnets comprising interlocking means.